Florida Housing Coalition Hurricane Member Update Webinar

Florida Housing CoalitionHurricane Member

Update Webinar

August 10, 2021Sponsored by Fannie Mae

AGENDA

• Training Announcements

• Updates

• Best Practices for Affordable Housing Renovation from the Florida Solar Energy Center

Training Announcement

Housing Counseling:

Emerging Issues Resulting from COVID

September 22, 2021 at 2:00 pm

Register at: https://attendee.gotowebinar.com/register/4585997445061612557

https://attendee.gotowebinar.com/register/4585997445061612557

Training Announcement

Using the LHAP Between Triennial Updates

September 23, 2021 at 2:00 pm

Register at: https://attendee.gotowebinar.com/register/7564674500264965389


UPDATES

• FEMA Revises Individual Assistance Rule to allow holders of heir title to provide alternative proof of ownership (see handout)

• See NBC Story: https://www.nbcnews.com/nightly-news/video/fema-changes-document-rules-for-assistance-to-assist-families-living-on-heirs-property-120085573654

• FHFA requires Fannie Mae and Freddie Mac to prepare 3 yearEquitable Housing Financial Plans (see handout)

• https://www.fhfa.gov/Media/PublicAffairs/Pages/FHFA-Announces-Equitable-Housing-Finance-Plans-for-Fannie-Mae-and-Freddie-Mac.aspx

https://www.nbcnews.com/nightly-news/video/fema-changes-document-rules-for-assistance-to-assist-families-living-on-heirs-property-120085573654

https://www.fhfa.gov/Media/PublicAffairs/Pages/FHFA-Announces-Equitable-Housing-Finance-Plans-for-Fannie-Mae-and-Freddie-Mac.aspx

Janet McIlvaineFlorida Solar Energy Center [email protected]

Best Practices for Affordable Housing Renovation

from the Florida Solar Energy Center

mailto:[email protected]

7 | Building America Partnership for Improved Residential Construction ba-pirc.org

Deep Retrofit Field Study and

the Retrofit Challenge

Janet McIlvaineResearch AnalystBuilding America-

Partnership for Improved Residential [email protected]

September 10, 2021

Hot Humid Climate Existing Homes


• Health and Safety– Combustion safety before, during, and after retrofit

– Control air and moisture flow

• Efficiency enhancements: – Whole house air sealing, ACH50 ≤ 6.0

– Duct sealing, Qn,out ≤ 0.06

– Compact Fluorescent Lighting

– Ceiling Insulation to R-38

• “Up-spec” at replacement:– Programmable thermostat

– ENERGY STAR® appliances

– Higher efficiency water heater (EF ≥ 0.92)

– R-6 duct work

– White/light roof finish

– White/light exterior paint

– ENERGY STAR® fans

– ≥15 SEER Heat pump in Central FL; AC in South FL

– ENERGY STAR® windows or apply low SHGC film (SHGC ≤ 0.27; U-value ≤ 0.60)

The Retrofit Challenge: Best Practice

strategies for Florida affordable housing

8


The Retrofit Challenge Best Practices Document

Contents

Definitions ......................................................................................................................... i

Acknowledgements ........................................................................................................... ii

1.0 Overview..................................................................................................................... 1

2.0 Critical Cautions ......................................................................................................... 2

3.0 Current Best Practice Recommendations ..................................................................... 2

3.1 Heating, Ventilation, Cooling, and Air Conditioning (HVAC) Distribution Systems 2

3.1.1 Existing HVAC Equipment Not Being Replaced ......................................................... 2

3.1.2 Full or Partial HVAC System Replacement.................................................................. 2

3.1.3 All Homes Regardless of HVAC System Replacement ............................................... 3

3.2 Whole-House Airtightness...................................................................................... 4

3.3 Roof Finish and Replacement................................................................................. 4

3.4 Attic Insulation ...................................................................................................... 4

3.4.1 Vented Attics ................................................................................................................... 4

3.4.2 Attic Knee Walls ............................................................................................................. 5

3.4.3 Unvented Attics............................................................................................................... 5

3.5 Windows ............................................................................................................... 5

3.5.1 Window Replacement..................................................................................................... 5

3.5.2 All Homes Regardless of Window Replacement ......................................................... 5

3.6 Exterior Walls ....................................................................................................... 5

3.7 Floors .................................................................................................................... 6

3.8 Water Heating ....................................................................................................... 6

3.8.1 Water Heater Replacement............................................................................................. 6

3.8.2 All Homes Regardless of Water Heater Replacement.................................................. 6

3.9 Appliances, Lighting, and Fans – All Homes ........................................................... 6

3.10 Site ...................................................................................................................... 6

3.11 Combustion Safety ............................................................................................... 7

3.11.1 Combustion Appliance Replacement .......................................................................... 7

3.11.2 All Homes With Combustion Appliances Regardless of Replacement .................... 7

4.0 Certified Home Energy Rater Minimum Scope of Activity – All Homes ....................... 8

4.1 Duct Testing .......................................................................................................... 8

4.2 Whole-House Testing ............................................................................................. 8

5.0 Best Practices Review and FSEC Partnership: ........................................................... 10

Appendix - General Guidance on Passive, Run-time, Outside Air Ventilation System ...... 11

Major Elements .............................................................................................................. 11

Intake Register.......................................................................................................... 11

Duct (details may vary among air handler configurations) ......................................... 12

3.1 Heating, Ventilation, Cooling, and Air Conditioning (HVAC) Distribution

Systems Caution: Reference the Combustion Safety section (3.11) if a gas furnace exists or is planned.

3.1.1 Existing HVAC Equipment Not Being Replaced

Hire a heating, ventilation, and air conditioning (HVAC) contractor to evaluate, and

service if needed, refrigerant charge, inside and outside coil condition, condensate drain

lines, and gas furnace components including exhaust flues, combustion air supply, gas

lines, and other major equipment components.

Implement all items in “All Homes Regardless of System Replacement” below.

3.1.2 Full or Partial HVAC System Replacement

Install, at minimum, an ENERGY STAR heat pump (seasonal energy efficiency ratio

(SEER) 14.5 or greater). In south Florida, an ENERGY STAR air conditioner is acceptable.

Equipment Sizing: Perform ACCA Manual J calculations (now required for replacements

by the Florida Energy Code). Use projected home characteristics provided by house supervisor.

Supply and Return Ducts: Seal accessible (30” clearance) ducts left in place with code-

approved sealant (required at equipment change out by Florida Energy Code), including

the return plenum air barrier (drywall, duct board, etc). Provide air barrier if not present.

Air Handler (AHU) Closet at AHU Replacement: Modify AHU closets to create a

dedicated, sealed return plenum with a correctly-sized wall or ceiling-mounted return air

grille.

Duct Replacement: Install new ducts with R-value ≥ 6.


AHU Location: When equipment and ducts are replaced, relocate AHU into conditioned space.

Perform ACCA Manual S equipment selection.

Perform ACCA Manual D duct sizing.

Produce a schematic duct design for field crew showing sizes for each component and

conduct rough-in inspection to ensure installation meets design intent.

3.1.3 All Homes Regardless of HVAC System Replacement

Duct Sealing: Hire an HVAC contractor to seal all duct connections with UL181-rated

materials, preferably fiberglass mesh embedded mastic, including joints and edges in

supply and return runs, return plenum, and connections to AHU. Important note: Contractor will revisit site to conduct additional sealing for all duct systems (new and

existing) that do not pass the post-renovation leakage test. Maximum acceptable test

result is six cubic feet of air per minute (cfm) per 100 square feet of conditioned area at

the test pressure of 25 pascals (Qn,out ≤ 0.06).

Duct Airtightness Testing: Have a certified home energy rater conduct a duct airtightness

test as outlined in the Duct Testing section (4.1).

AHU Closet: Eliminate louvered doors that serve as returns. Eliminate metal AHU stands. Where the

return plenum is formed by open framing and a plywood platform, install and seal an air barrier (drywall

or duct board) to separate return from adjacent wall


Adopt Your Version of the Best Practices

From “Minimum Rehabilitation Standards” Into Bid Documents

Collectively, best practices bring existing home performance

up to new construction levels – “as good as new”!


Research Institute of the University of Central Florida, Cocoa Campus

Established 1976 solar system testing and certification

Later added energy efficiency for buildings, hydrogen, fuel cells, & education

~100 researchers


Origins of the Best Practices

Industry and Research Context

DOE Research focus on zero energy new homes

Deep

Energy

Retrofits


Retrofit Field Study Partners 2009-14

Partner map

Partnerships Map: http://goo.gl/5KnTau

http://goo.gl/5KnTau


• Retrofits paid for by partners

– Florida Local Government Housing Entities

• County and the City of Sarasota, Volusia County, Brevard County,

City of Melbourne, City of Palm Bay, City of Lakeland, Orange

County

– Non-profit Housing Providers

• Sarasota Housing Trust and Newtown Housing Trust

• Habitat for Humanity Affiliates in Brevard, Lake Sumter, Leesburg,

Palm Beach & Sarasota Counties

– Funding sources

• US HUD – Neighborhood Stabilization Program (ARRA)

• SHIP & HOME Programs

• Private Funding

Deep Retrofit Field Study


Field Research 2009-14

Background of the Retrofit Challenge

• Partnership goal of “deep” energy retrofit: ≥ 30% improvement

• 30% compared to what?

– No utility data, biased anyway by weather, occupancy, and operation

• 30% HERS Index

– Basically energy needed to run home

– Home Energy Rating System (HERS)

– Nation-wide “scoring” method

– Combines all energy-related characteristics of the whole house

– Standard occupancy & operation

• Typical Florida new home construction ≈ 85 (in 2012)

In Florida (2012)


Technical Approach – Field Study

4. Post-retrofit Audit & Analysis

Whole House Efficiency

Improvement

Projected Annual Energy Use & Cost Savings

Projected First Year Cash Flow

with Actual Costs

3. Partner decisions and renovation

2. Pre-retrofit Audit, recommendations for 30% Improvement

1. Partner developed scope of work

Decisions influenced

by cost, availability,

market expectations,

timeline, etc.


30% HERS Index Improvement

1990’s ~115 2000’s ~110

1970’s ~1351960’s ~150 1980’s ~125

HERS Index for data set ranged from 95 to 184.


1970’s - 132

1990’s - 112

2000’s - 107

1960’s - 150 1980’s - 125

Average HERS Index Scores & Trend


Variation Among Same Vintage Homes

Typical New

Florida Homes

(HERS Index

Score ~86)

All 1960’s

30%+


• 100 houses

• 70 completed

• 46 renovations met 30%

goal

• 42 complete cost data

• Pre-retrofit audit

• Recommendations

• Partner decisions

• Post-retrofit audit

• Final energy and cost

savings

Deep Retrofit Field Study


• Poorly maintained or missing equipment

• Building cavities used as ducts

• Compressed, brittle, leaky, ducts – poor

access - Average Qn,out = 0.14

• Small air handler closets connected to

attic – poor access

Typical HVAC Existing Conditions

21


• Rusted, leaky water heaters

• Missing or worn out appliances

Typical Water Heating & Appliances

22


• Porches/garages converted into living space

• Damaged window and poor closure

• Compressed, sparse ceiling insulation w/poor access –

low roof pitch

• High infiltration (average ACH50=13.3)

Typical Envelope Existing Conditions

23


Retrofit Case Study: Sarasota Home

24


Retrofit Case Study: Sarasota Home

25

• Concrete block, slab-on-grade

• Built in 1967, 1190 sf, 2 bedroom, 2 bath


NEW Heating and AC System (HVAC)

SEER 8.7, HSPF 6.75 Heat Pump

Duct Leakage: Qn,out = 0.05

(comparable to Florida new construction)

SEER 15, HSPF 8.8 Heat Pump

Duct Leakage: Qn,out = 0.02

(exemplary!)

(Target is ENERGY STAR SEER 14.5

Qn,out = 0.06)

Pre-retrofit Post-retrofit


Air Handler Closet


Limited air barrier on walls or ceiling;

mysterious construction in return plenum

Closet gutted and drywalled.

New return plenum & platform constructed


Drywall Repair – Infiltration Reduction

Plumbing access panel &

miscellaneous drywall penetrations

were repaired

Plumbing access

“cover”. (Example from

alternate house)

28


Infiltration Reduction, Windows

Major infiltration reduction: ACH50 = 8

(Target is ACH50 = 6)

Windows: SHGC = 0.37; U-Value = 0.47

(Target is ENERGY STAR:

SHGC ≤ 0.27; U-value ≤ 0.60)

Note angle of window in

‘closed’ position

Exceptionally leaky: ACH50 = 42

Typical new construction = ~5

29



Ceiling Insulation

Note: Image from alternate house

30


Approximately R-30

(Target R-38)Approximately R-10


ENERGY STAR® Appliances & CFLs

31



White/Light Exterior

32

Pre-retrofit

Post-retrofit

Whole House

Energy Efficiency

HERS

Index

Pre-retrofit 165

Minimum AC Replacement 144

Post-retrofit 74

% Improvement

over Minimum

49%

Pre- and post-renovation

Projected Cost

Effectiveness

Projected

Annual

Energy

Cost

Pre-retrofit $1,983

Minimum AC

Replacement $1,839

Post-retrofit $1,120

Annual Saving over

Minimum$719

Incremental Cost $5,181

Annual Finance Increase $337

First Year Cash Flow +$382

(Fixed 5%, 30 year)


• 70 houses completed process, 46 met 30% goal

• Can we develop standard packages based on house age, size, etc? – Answer: No. Too much variation in as found condition

– Bummer

• BUT, we can have standard master specifications apply as-needed depending on as-found conditions

• Improvement level will depend on as-found condition– How many improvements are needed?

– More improvements – greater potential for deep results

• Taken collectively– Typically reach 30% improvement when multiple replacements are needed

– Approximates new home whole house efficiency

– Applied across all houses, produces similar performance levels

• HOW MUCH DOES IT COST?

Standardized Approach to 30%?


46 deep retrofits, 42 provided cost data

-

86% of Deep Retrofits achieved positive first year cash flow.

$5,000


Deep Retrofit Best Practices

13 Key Efficiency Strategies

in Order of Prevalence

Recommended Best Practices

for 30%+ Improvement

1. HVAC equipment at replacementEnergy Star Heat Pump

(Energy Star AC in CZ 1)

2. Additional ceiling insulation R-38

3. Whole-house air sealing ACH50 = 6.0

4. Air distribution system sealing (reduced Qn,out) Qn,out ≤ 0.06

5. Lower solar heat gain coefficient (SHGC) window

windows 6. at replacement or applied filmEnergy Star Windows

7. ENERGY STAR® refrigerator at replacement Energy Star Refrigerator

8. Slightly higher efficiency water heater at replacement

(electric EF=0.92)

0.92+ EF Elec Water Heater

Tankless Gas Water Heater

9. 30% more fluorescent fixtures/bulbs at replacement 100% CFLs

10. Programmable thermostat at replacement Programmable thermostat

11. R-6 ducts at replacement R-6 ducts

12. Higher reflectivity exterior wall color at replacement White exterior pain

13. Higher reflectivity roof shingles at replacement White or light shingles

14. Higher efficiency ceiling fan(s) at replacement Energy Star Ceiling Fans


• Health and Safety– Combustion safety before, during, and after retrofit

– Control air and moisture flow

• Efficiency enhancements: – Whole house air sealing, ACH50 ≤ 6.0

– Duct sealing, Qn,out ≤ 0.06

– Compact Fluorescent Lighting

– Ceiling Insulation to R-38

• “Up-spec” at replacement:– Programmable thermostat

– ENERGY STAR® appliances

– Higher efficiency water heater (EF ≥ 0.92)

– R-6 duct work

– White/light roof finish

– White/light exterior paint

– ENERGY STAR® fans

– ≥15 SEER Heat pump in Central FL; AC in South FL

– ENERGY STAR® windows or apply low SHGC film (SHGC ≤ 0.27; U-value ≤ 0.60)

13 Deep Retrofit Strategies

36


Best Practices – Scopes of Work

Contents

Definitions ......................................................................................................................... i

Acknowledgements ........................................................................................................... ii

1.0 Overview..................................................................................................................... 1

2.0 Critical Cautions ......................................................................................................... 2

3.0 Current Best Practice Recommendations ..................................................................... 2

3.1 Heating, Ventilation, Cooling, and Air Conditioning (HVAC) Distribution Systems 2

3.1.1 Existing HVAC Equipment Not Being Replaced ......................................................... 2

3.1.2 Full or Partial HVAC System Replacement.................................................................. 2

3.1.3 All Homes Regardless of HVAC System Replacement ............................................... 3

3.2 Whole-House Airtightness...................................................................................... 4

3.3 Roof Finish and Replacement................................................................................. 4

3.4 Attic Insulation ...................................................................................................... 4

3.4.1 Vented Attics ................................................................................................................... 4

3.4.2 Attic Knee Walls ............................................................................................................. 5

3.4.3 Unvented Attics............................................................................................................... 5

3.5 Windows ............................................................................................................... 5

3.5.1 Window Replacement..................................................................................................... 5

3.5.2 All Homes Regardless of Window Replacement ......................................................... 5

3.6 Exterior Walls ....................................................................................................... 5

3.7 Floors .................................................................................................................... 6

3.8 Water Heating ....................................................................................................... 6

3.8.1 Water Heater Replacement............................................................................................. 6

3.8.2 All Homes Regardless of Water Heater Replacement.................................................. 6

3.9 Appliances, Lighting, and Fans – All Homes ........................................................... 6

3.10 Site ...................................................................................................................... 6

3.11 Combustion Safety ............................................................................................... 7

3.11.1 Combustion Appliance Replacement .......................................................................... 7

3.11.2 All Homes With Combustion Appliances Regardless of Replacement .................... 7

4.0 Certified Home Energy Rater Minimum Scope of Activity – All Homes ....................... 8

4.1 Duct Testing .......................................................................................................... 8

4.2 Whole-House Testing ............................................................................................. 8

5.0 Best Practices Review and FSEC Partnership: ........................................................... 10

Appendix - General Guidance on Passive, Run-time, Outside Air Ventilation System ...... 11

Major Elements .............................................................................................................. 11

Intake Register.......................................................................................................... 11

Duct (details may vary among air handler configurations) ......................................... 12

3.1 Heating, Ventilation, Cooling, and Air Conditioning (HVAC) Distribution

Systems Caution: Reference the Combustion Safety section (3.11) if a gas furnace exists or is planned.

3.1.1 Existing HVAC Equipment Not Being Replaced

Hire a heating, ventilation, and air conditioning (HVAC) contractor to evaluate, and

service if needed, refrigerant charge, inside and outside coil condition, condensate drain

lines, and gas furnace components including exhaust flues, combustion air supply, gas

lines, and other major equipment components.


3.1.2 Full or Partial HVAC System Replacement

Install, at minimum, an ENERGY STAR heat pump (seasonal energy efficiency ratio

(SEER) 14.5 or greater). In south Florida, an ENERGY STAR air conditioner is acceptable.

Equipment Sizing: Perform ACCA Manual J calculations (now required for replacements

by the Florida Energy Code). Use projected home characteristics provided by house supervisor.

Supply and Return Ducts: Seal accessible (30” clearance) ducts left in place with code-

approved sealant (required at equipment change out by Florida Energy Code), including

the return plenum air barrier (drywall, duct board, etc). Provide air barrier if not present.

Air Handler (AHU) Closet at AHU Replacement: Modify AHU closets to create a

dedicated, sealed return plenum with a correctly-sized wall or ceiling-mounted return air

grille.

Duct Replacement: Install new ducts with R-value ≥ 6.


AHU Location: When equipment and ducts are replaced, relocate AHU into conditioned space.

Perform ACCA Manual S equipment selection.

Perform ACCA Manual D duct sizing.

Produce a schematic duct design for field crew showing sizes for each component and

conduct rough-in inspection to ensure installation meets design intent.

3.1.3 All Homes Regardless of HVAC System Replacement

Duct Sealing: Hire an HVAC contractor to seal all duct connections with UL181-rated

materials, preferably fiberglass mesh embedded mastic, including joints and edges in

supply and return runs, return plenum, and connections to AHU. Important note: Contractor will revisit site to conduct additional sealing for all duct systems (new and

existing) that do not pass the post-renovation leakage test. Maximum acceptable test

result is six cubic feet of air per minute (cfm) per 100 square feet of conditioned area at

the test pressure of 25 pascals (Qn,out ≤ 0.06).

Duct Airtightness Testing: Have a certified home energy rater conduct a duct airtightness

test as outlined in the Duct Testing section (4.1).

AHU Closet: Eliminate louvered doors that serve as returns. Eliminate metal AHU stands. Where the

return plenum is formed by open framing and a plywood platform, install and seal an air barrier (drywall

or duct board) to separate return from adjacent wall


Program Master Specs Used for Bid Docs

& Scopes of Work

From “Minimum Rehabilitation Standards” Into Bid Documents


Program Master Specs Used for Bid Docs

& Scopes of Work

From “Minimum Rehabilitation Standards”

Into Bid Documents


• Bid Documents include QA; replacement specs;

performance standards

• Air, heat, and moisture control measures – “baked in”

Best Practices Integrated into “business as

usual”

Into City of Melbourne Bid Documents


The Retrofit Challenge

Affordable Housing Partners pledge to adopt Best Practices in retrofit programs.

Best Practices (collectively) make existing homes “as good as new”

Real World Science, Real World Best Practices.

39%

Field &

Pilot

Studies

Resources and Participation Action Items www.ba-pirc.org/retrofit

https://energyresearch.ucf.edu/research/buildings-research/affordable-housing-retrofits/

Self Guided Documents Case Studies Research

http://www.ba-pirc.org/retrofit

https://energyresearch.ucf.edu/research/buildings-research/affordable-housing-retrofits/


Retrofit Challenge Action Plan


Reality Check

Upcoming Training

September 17, 2021

at 1:30 pm

Disaster Resilience/ Recovery

topics from the recent Florida

Housing Coalition conferencehttps://attendee.gotowebinar.com/register/4768344850866792720


Technical Assistance is Available

Available Daily: 1 (800) 677-4548

Options for Further Assistance Include:Phone and Email consultation

Site Visits

Register at www.flhousing.org for:WorkshopsWebinars

http://www.flhousing.org/

Thank you!

Gladys Cook

[email protected]

Michael Chaney

[email protected]



Florida Housing Coalition Hurricane Member Update Webinar

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Transcript of Florida Housing Coalition Hurricane Member Update Webinar